[HH] extended temperature LED

[Kurt Keville]

Normally companies only warranty operation to chip temps of 85 C so you may need to find a company that does business with the military. You can't do a 125 C spec in the (Cree) plastic package, you need a glass hermetic ceramic package. 
 
This one goes to 100 C. 
http://www.cree.com/~/media/Files/Cree/Chips%20and%20Material/Data%20Sheets%20Chips/CPR3BV.pdf 
 
With this one, the junction temp can go to 150. 
http://www.cree.com/~/media/Files/Cree/LED%20Components%20and%20Modules/XLamp/Data%20and%20Binning/XLampXPEHEW.pdf 
You only have 25 deg C headroom for temperature drop from the thermal resistance to air (so you have heat sink concerns). 
 

 
 
 
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